This is a G063346329 model lens, a product of Qioptiq Photonics, a renowned vendor in the field of precision optics. The lens is spherical in shape, specifically a symmetric concave-concave lens, and is mounted on fused silica (UVFS). The lens has a base shape of a circle, with a diameter of 22.4 mm.
The lens's thickness at the center is 1.5 mm, and it has an effective focal length (EFL) of -40 mm at a wavelength of 1064 nm. The first radius of curvature (R1) is -40.388 mm, while the second radius of curvature (R2) is 40.388 mm. The lens does not have an inner or outer radius.
The lens is made of UVFS material with the ID "uvfs mal- 1965". It comes with a coating on both the front and back surfaces. The front coating is "qio hp nbar arhs-yag", and the back coating is also "qio hp nbar arhs-yag".
According to the vendor's website, this item is currently in stock. For more information, you can visit the provided weblink.